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Side-by-side specification comparison of two reference models
A full side-by-side comparison of reference models Legion Y520-15IKBN and Thinkpad P51s within the same category.
Side-by-side specification comparison of two reference models
| Specification | Legion Y520-15IKBN | Thinkpad P51s |
|---|---|---|
| Price | Not for sale | Not for sale |
| General | ||
| Brand | Lenovo | Lenovo |
| Product Family | Legion | ThinkPad |
| Model | Legion Y520-15IKBN | Thinkpad P51s |
| Model Number | Lenovo Legion Y520-15IKBN | — |
| Launch Year | 2017 year | 2017 year |
| Form Factor | Clamshell | Clamshell |
| Laptop Category | Gaming | Mobile Workstation |
| Operating System | Windows 10 | Windows 10 |
| Operating System Architecture | 64-bit | 64-bit |
| Processor | ||
| Processor Manufacturer | Intel | Intel |
| Processor Family | Intel Core i5 | Intel Core i7 |
| Processor Model | Intel Core i5 7300HQ 2.5GHz | Intel Core i7 7600U 2.8GHz |
| Processor Generation | 7th Gen | 7th Gen |
| CPU Architecture | x86-64 | x86-64 |
| CPU Process Node | 14 nm | 14 nm |
| CPU Cores | 4 cores | 2 cores |
| Efficiency Cores | 0 cores | 0 cores |
| CPU Threads | 4 threads | 4 threads |
| CPU Base Clock | 2.5 GHz | 2.8 GHz |
| CPU Max Boost Clock | 3.5 GHz | 3.9 GHz |
| L3 Cache | 6 MB | 4 MB |
| Processor Base Power | 45 W | 15 W |
| CPU Manageability Technology | — | Intel vPro eligible |
| Graphics | ||
| Graphics Type | Discrete | Discrete |
| GPU Manufacturer | NVIDIA | NVIDIA |
| GPU Model | Nvidia GeForce GTX 1050 | NVIDIA Quadro M520 |
| GPU Architecture | Pascal | NVIDIA Maxwell |
| VRAM Capacity | — | 2 GB |
| VRAM Type | — | GDDR5 |
| Maximum External Displays | — | 3 displays |
| Maximum External Resolution | 3840 x 2160 at 30 Hz via HDMI | 4096 x 2304 |
| Memory | ||
| Installed Memory | 8 GB | 16 GB |
| Maximum Memory | 32 GB | 32 GB |
| Memory Type | DDR4 | DDR4 |
| Memory Speed | 2400 MT/s | 2400 MT/s |
| Memory Form Factor | SO-DIMM | SO-DIMM |
| Memory Slots | 2 slots | 2 slots |
| Memory Upgradeable | Yes | Yes |
| Memory Channels | Dual | Dual |
| Storage | ||
| Primary Storage Type | SSD | SSD |
| Storage Capacity | 128 GB | 1000 GB |
| Storage Interface | PCIe NVMe + SATA | — |
| Storage PCIe Generation | PCIe 3.0 | PCIe 3.0 x4 |
| Storage Form Factor | M.2 + 2.5-inch | — |
| Installed Storage Drives | 2 drives | 1 drives |
| Maximum Storage Drives | 2 drives | 2 drives |
| M.2 Storage Slots | 1 slots | 2 slots |
| 2.5-inch Drive Bay | Yes | Yes |
| RAID Support | — | — |
| Card Reader | Yes | Yes |
| Card Reader Formats | MMC, SD, SDHC, SDXC | MMC, SD, SDHC, SDXC |
| Card Reader Standard | — | SD 3.0 / UHS-I |
| Display | ||
| Display Size | 15.6 inch | 15.6 inch |
| Display Resolution | 1920 x 1080 | 3840 x 2160 |
| Resolution Class | FHD | 4K |
| Display Technology | IPS LCD | IPS LCD |
| Panel Type | IPS | IPS |
| Refresh Rate | — | 60 Hz |
| Display Brightness | 250 nits | 300 nits |
| Contrast Ratio | — | 1000:1 |
| Aspect Ratio | 16:9 | 16:9 |
| Display Finish | Anti-glare | Anti-glare |
| Adaptive Sync Technology | — | — |
| Viewing Angle | — | 170 horizontal / 170 vertical degree |
| Camera & Biometrics | ||
| Webcam Resolution | 720p (1.0 MP) | 720p |
| Camera Features | — | Fixed focus |
| Audio | ||
| Speaker Configuration | 2 Harman speakers | 2 x speakers |
| Speaker Power | 2 x 2 W | 2 x 2 W |
| Audio Technology | Harman; Dolby Audio | HD Audio |
| Microphone Configuration | Dual-array microphone | Dual-array microphone |
| Audio Jack | Yes | Yes |
| Keyboard & Input | ||
| Keyboard Type | 6-row keyboard | Spill-resistant |
| Keyboard RGB Zones | — | 0 zones |
| Numeric Keypad | Yes | Yes |
| Spill-Resistant Keyboard | — | Yes |
| Touchpad Type | One-piece touchpad | Buttonless multi-touch clickpad |
| Touchpad Material | — | Mylar surface |
| Pointing Stick | — | Yes |
| Wireless & Networking | ||
| Wi-Fi Standard | Wi-Fi 5 | Wi-Fi 5 |
| Wi-Fi IEEE Standard | 802.11ac | 802.11ac |
| Wi-Fi Bands | Dual-band | 2.4 GHz, 5 GHz |
| Wi-Fi Spatial Streams | — | 2x2 |
| Wi-Fi Module | — | Intel Dual Band Wireless-AC 8265 |
| Bluetooth Version | 4.1 | 4.1 |
| Ethernet | Yes | Yes |
| Ethernet Speed | 1 GbE | 1 GbE |
| WWAN | No | Optional |
| SIM Slot | — | Micro-SIM |
| Ports & Expansion | ||
| USB Type-A Port Count | 3 ports | 3 ports |
| USB Type-A Specifications | 2x USB 3.1 Gen 1; 1x USB 2.0 | USB 5Gbps |
| USB Type-C Port Count | 1 ports | 1 ports |
| USB Type-C Specifications | 1x USB-C 3.1 Gen 1 / DisplayPort 1.2 | USB 10Gbps, Thunderbolt 3 |
| USB4 Port Count | 0 ports | 0 ports |
| Thunderbolt Port Count | 0 ports | 1 ports |
| Thunderbolt Version | — | Thunderbolt 3 |
| HDMI Port Count | 1 ports | 1 ports |
| HDMI Version | 1.4 | 1.4 |
| DisplayPort Output | DisplayPort 1.2 via USB-C | via USB-C |
| RJ-45 Port Count | 1 ports | 1 ports |
| 3.5 mm Audio Combo Port Count | 1 ports | 1 ports |
| SD Card Slot Count | 1 ports | 1 ports |
| microSD Card Slot Count | 0 ports | 0 ports |
| Smart Card Reader | No | Optional |
| Security Lock Slot | Yes | Yes |
| Dedicated Docking Connector | — | Yes |
| Internal PCIe Slots | 1x M.2 storage slot | M.2 storage, WLAN and optional WWAN slots |
| Battery & Power | ||
| Battery Capacity | 45 Wh | — |
| Battery Cells | 3 cells | — |
| Battery Chemistry | Li-polymer | Li-Ion |
| Removable Battery | — | Yes |
| Battery Life | 4 hours | — |
| Battery Life Test Method | Lenovo internal estimate | — |
| Power Adapter | 135 W | 65 W |
| Power Connector | Barrel (round-tip) | USB-C or Lenovo slim-tip |
| USB-C Charging | — | Yes |
| USB Power Delivery Version | — | USB Power Delivery (revision not stated) |
| Maximum USB-C Charging Power | — | 65 W |
| Dimensions & Build | ||
| Width | 380 mm | 365.8 mm |
| Depth | 265 mm | 252.8 mm |
| Thickness | 25.8 mm | 20.2 mm |
| Weight | 2.5 kg | 2.5 kg |
| Chassis Material | PC/ABS | Glass-Fiber Reinforced Plastic |
| Lid Material | PC/ABS | Glass-Fiber Reinforced Plastic |
| Base Material | PC/ABS | Glass-Fiber Reinforced Plastic |
| Hinge Opening Angle | — | 180 degree |
| MIL-STD Testing | — | MIL-STD-810G |
| IP Rating | — | No rated ingress protection |
| Security & Manageability | ||
| TPM | — | dTPM 2.0 |
| BIOS / UEFI Password Support | Yes | Yes |
| Drive Password Support | Yes | Yes |
| Secure Boot | — | Yes |
| Enterprise Manageability | — | Intel vPro capable |
| Smart Card Support | No | Optional |
| BIOS Recovery / Self-Healing | — | — |
| Certifications & Sustainability | ||
| ENERGY STAR | ENERGY STAR 6.1 | ENERGY STAR 6.1 |
| EPEAT | Silver | Gold |
| RoHS Compliance | Yes | Yes |
| Environment & Warranty | ||
| Operating Temperature | — | 5 to 35 °C |
Legion Y520-15IKBN and Thinkpad P51s share specifications such as Display Size (15.6 inch), Brand (Lenovo), Launch Year (2017 year), Form Factor (Clamshell).
The main differences: Processor Model (Legion Y520-15IKBN: Intel Core i5 7300HQ 2.5GHz, Thinkpad P51s: Intel Core i7 7600U 2.8GHz); GPU Model (Legion Y520-15IKBN: Nvidia GeForce GTX 1050, Thinkpad P51s: NVIDIA Quadro M520); Installed Memory (Legion Y520-15IKBN: 8 GB, Thinkpad P51s: 16 GB); Storage Capacity (Legion Y520-15IKBN: 128 GB, Thinkpad P51s: 1000 GB).
Legion Y520-15IKBN may suit users who need its differing values, while Thinkpad P51s benefits those who need its paired strengths. Review the specs table above before deciding.
